Donias, H. W., D’Ancona, G., Pande, R. U., Schimpf, D., Kawaguchi, A. T., & Karamanoukian, H. L. (2005). Heparin Dose, Transfusion Rates, and Intraoperative Graft Patency in Minimally Invasive Direct Coronary Artery Bypass. The Heart Surgery Forum, 6(3), 176-180. https://doi.org/10.1532/hsf.818